Fluid-pressure regulator.



G. E HULSE. FLUID PRESSURE REGULATOR.

- APPLIOATION FILED SEPT. 24, 1907.

WITNESSES: E/VTOR ATTORNEYS 905,187. Patented Dec. 1,1908.

- therefrom.

UNITED STATES- PATENT OFFICE.

GEORGE E. HULSE, or NEWARK, NEW, JERSEY; Assrenor. TO THE SAFETY CAR HEATING &

LIGHTING coMrANv ,-A' CORPORATION or NEW JERSEY.

rLUrn-Pnnsstmn REGULATOR.

Specification of Letters Patent.

mam Dec.' 1,1908.

Application filed September 1907. v No. 894,347.

To allwhom'it mayconcern: I 7

Be it known that I, Gnonon E. HULSE, residing at Newark, in 'the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Fluid- Pressure Regulators, of which the following is a full, clear, and exact description, such as will enableothers skilled'in theart to which it appertains to m p e and use the same.- I

This invention relates to fluid "pressure regulators and one of the objects thereofisto provide a regulator of the above type of reliable and positive, action which will automatically regulate the supply of gas and retain a constant pressure in the conducting conduits of a gas lighting system. I

Another object of the invention-is to arrange in a regulator of the above type means for adjusting the tension of the gas pressure regulating devices in such manner as to permit a ready access thereto for the-purposes of repair or adjustment.

Other. object'swill be in part in part pointed out hereinafter.

In the accompanyingdrawings, wherein is illustrated one ofthe various possible embodiments of my invention, Figure 1 is a view in top elevation of a regulator constructed in accordance therewith having its cover portion removed; Fig. 2 is a similar view of the regulator in asembled. condition; and Fig. 3 is a cross sectional view taken on line a-a. of Fig. '2.

Similar reference characters refer to similar parts throughout the several figures of the drawings. 1

Referring now to the drawings, "the-casing 1 is shown as, provided with a peripheral ledge 2 upon which rest the edges of a-flexible diaphragm 3. A- section- 4 ofcasing l is shown as being detachably secured thereto as by means of clamp screws 5, said detachable portion extending inwardly toward thecenter of thecasing. The diaphragm extends underneath this portion and is clamped underneath the same by. clamp screws 5. A cover portion 6 is secured to ledge-2 said cover portion vbein avented to the atmosphere by means 0 a pipe 7 which leads obviojls and .Casing 1 is provided with an inlet port 8 which conducts the gas from a source; of supply beneath diaphragm 3 said gas'being discharged from beneath the diaphragm by means of an outlet pipe'9.

The flow of gas through inlet port 8 is controlled by means of a valve 10, which works against a seat 11 formed within a valve casing 11 set within the casing into ,which leads 'port 8, said valve being exteriorly recessed as at 12 to admit of a free passage of gas to the interior of the casing. A coil spring 13' encircles a reduced portion 14 of valve 10 said spring acting against the valve and a shoulder 15 formed within casing'll normally'to urge the valve from its seat. Pivoted-at 16 to an arm 17 extending from casing 11 is a'bell crank lever 18 one end of which is bifurcated and extends with-' lathe-casing to a position beneath the central portion of the diaphragm to which it is connected by means of a link 19.

A leaf spring 20 extends between the bifurcated portions of lever 18. This spring base-permanent bend and is secured atone end to said lever as by means of screw 21 the opposite end of-said spring being engaged in a fixed support 22 arranged within the easing. Threaded in arm 23 of bell crank lever 18 isan adjusting screw 24 which at its inner end engages a knuckle 25 extending from valve 10. I It will be observed that leaf spring 20 through lever 18 opposes'an expansive movement of the diaphragm and tends to swing adjusting screw-24 inwardly within the casing said valve member being held in constant engagement with said adjusting screw by-means of coil spring 13.

. 7 Having th describedmy invention, th

operation thereof is substantially as follows: The gas from the'source of supply flows through an inlet port, 8, thence through the valve seat 11 to the chamber formed between the diaphragm and the'lower portion of the casing, thence through the outlet-port 9 to the distributing pipes. When the pressure within the chamber increases to'a suiii- It will accordingly be seen that I have devised an improved pressure regulator adapted to attain, among others, all the ends and objects above pointed out, in an exceedingly simple yet eflicient manner. The tension of springs 20 and 13 may be conveniently ad-- justed by means of a single turning of adjusting screw 24 to which access may be readily had by removing portion 4 and cover portion 6 from their supporting ledge. The leaf spring extending through the bifurcated portions of the bell-crank lever acts thereon in such a way as to insure against any racking strains and prevents any binding in the pivotal mounting of the controlling lever.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

' 1. In a fluid pressure regulator, the combination with a casing, of a diaphragm supported therein, an inlet pipe connected with said casing, an outlet pipe leading therefrom, avalve for controlling the flow of gas through the inlet pipe, a' lever connected with said diaphragm and having operative connection with said valve, one leg of said lever being bifurcated, a leaf spring secured to said lever and adapted to oppose the distention of said diaphragm, said leaf spring extending between the bifurcated parts of said lever, and a support within the casing to which said lever is secured.

2. In a fluid pressure regulator, the combination with a casing, of a diaphragm supported within the same, inlet and outlet ports for said casing, a valve for controlling ,the flow of gas through the inlet port, a lever'connected with said diaphragm and having operative cpnnection with said valve, a

spring engaging said lever and adapted through the same tooppose a distention of the diaphragm, a spring directly enga ing therefrom, a valve interposed in the avenue of flow of gas through-said inlet pipe, a bellcrank lever having one end bifurcated and connected with said diaphragm, an adjust; ing screw threaded into the opposite end of said lever and engaging said valve, a coil spring engaging said valve and holding the same in engagement with said adjusting screw, a leaf spring secured to said lever and extending through the bifurcated portions thereof, and a support within the casing for the opposite end of said spring, said adj usting screw being adapted to regulate the tension of both of said springs.

4. In a fluid pressure regulator, in combination, a casing having a ledge adapted to support the edges of a flexible diaphragm, a portion of said ledge being detachable, a cover portion secured to the casing, said casing being provided with inlet and outlet ports, a-valve interposed in said inlet port and adapted to control the flow of gas therethrough, a coil spring encircling a portion of said valve and adapted to urge the same from its seat, a bell-crank lever? swiveled within the casing, one end of which is connected to said diaphragm, an adJustmg' GEORGE E. HULSE.

' Witnesses:

G. R. Jnwnr'r, E. E. ALLBEE. 

